New biodegradable battery. It consists of carbon, cellulose, glycerin and table salt.

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(Super)capacitor rather than battery, but still interesting: 3D printed, cellulose based, thousands of cycles and biodegradable within a couple of months. The article didn’t mention capacity but it looks like it’s intended to be enough for small IoT devices.

xopranaut

Is the salt used to give it some flavour?

intoned